Internal-combustion-engine valve.



RP. LEHR. INTERNAL COMBUSTION ENGINE VALVE; K APPLICATION FILED MAR. 23, 1912. V 1, 1 22,6 1 8, Patented Dec. 29, 1914.

hidwwas Inz wfor B. P. LEHR.

INTERNAL COMBUSTION ENGINE VALVE.

APPLICATION FILED 111111.23, 1912.

1,122,618, Patented Dec. 29,1914.

fun i/far ifrffjfir R. P; LEHR.

v INTERNAL COMBUSTION ENGINE VALVE,

7 APPLICATION FILED MAR. 23, 1912.

' Patented Dec. 29, 1914.

l 122,61&

W? 2 Mi W M j in g 2% I is Siate 0f ijslifmritiia, hiv, usefni imprm'ements aim-Engine Va' 0" is a specification This inventio 1' .sies is an inter bustion e 1 P av rotary sieev mission of 0 we engine cylthe burnt gases therefrom It is file object of his invantion is 391% wide a rotarys 9 he 01 internal 10mimple in construe .t and reliabie, and ed for coniroL arts 0:" a 133 .155

1 'tion operatic which 15 particuihzz so as to coznpe n' nearing surace and. 111- sure a siege cantact between time valve and the valve casing or seat.

The invenbien censiscg 01 the parts and the construction and cembinatinn parts as hereinafter more fully iescribecl and claimed having reference the acccmpanying' drawings, in which Figure l s a View in frsnt elevation of an I gins c021 truc'ted in with this .entimi; with is m'okn away. 1 2 is a vertical r52 section the engine and valve on the 7 Fig 3 is a horizontal 7 of 3. n the line E -W, Fig, is a, iwrizoiital section on I Iii--21, Fig. Fig. 5 is a horizontal seciionon the line EL-Y Fig. 2. 191 -.6 21- horizcntai ssction on the a Z-Z,

in the drawings AB represent a pair 0:? slightly sepa ated, pamliieFengi-ne cylinders which ara Sui-rounded a. water jacket ca? ing C and are suppaxted 1112011 {1 crankcase i) in the "usualmanner. Mounts; in the engine cylinders A E are pi'sfions rods Gtminecting similarly extending iirnal- Combustion fengines,

Formed on thefengme cylindeis $1 -33; at f some convenient pom-1: thereb'etwegn is a, ta-

per-i hibuigir 78.1w casing :2 which in.

, 4 s 452 419- iz,

f: i 1 en 0-3: the sieevw is a var-tied e tening p a v M shalti which 1S supported its lowr end.

on end 0 plate 5 t 01110]? hub "E @116. izhrwiz bearings 8 adgustment C2151 2 a Asian admitting 0.- vevent 0f its ne- 03, 51 0021 Tim may be yawn fr ;ri1

casing :2 by ramming i ks cap Eiounized the Shaft -is 3: spirzil 16 v: 1011 meshes filial 2% similar spiral gear 11.

051 a extending shaft 12-, W ich shaft 132- is mounted 5Q xotatein the ends of the trunk iii eiaiieiidsEbngitudinaiiy t' e're l'irougn; A aeathd whei 13 er: Qf the crank-ch vi i: engine 0571 eramis there the vaiva thereof, as shown in Fig. 3; a passage being formed in the engine casing leading from the cylinder A to one side of the valve casing and a similar passage being formed between the cylinder 13 and the other side or the alve casing.

Ports c-d are formed in the side walls of the engine cylinders A-B at a point above the pistons EF, when the latter are in their lowermost positions; the ports c(l con'imunicating with the interior of the valve casing 2 on opposite sides thereof, as shown in .Fig. 5, ome distance below the ports ab.

Al gas inlet pipe 15, leading from any suitable source of gas supply, opens to the interio of the valve casing 2, at a point approxim 'tely midway between the ports a-b and th ports c d, and at right angles thereto, as shown in Figs. 2 and 4. Leading from th valve casing 2 adjacent its lower end is a exhaust pipe 16, which is designed to be cdnstantly in communication with the interi'or of the valve 3, for which purpose the sitle walls of the 'alve 3 adjacent, its lower end are cut 2U ay to form openings 6 of large area, as shown in Fig. '6.

! Formed on one side of the valve 3 is a port f'which is positioned to register alternately with the ports cZ, so as to successively open and close the ports when the valve. 3 is revolved; the'port f forming a means of chmmunication between the interior of the e igine cylinders and the atmosphere tl rough the exhaust pipe 16. A similar p )I'l; g is formed in the side wall of the valve 3 adjacent its upper end which is designed to register alternately with the ports al'),

to open communication. between the upper ends of the cylinders A-B and the atmos phere through the interior of the valve 3 and the exhaust pipe 16.

An inlet port /1 is provided in the wall of the valve 3 in alinement with the inlet or feed pipe 15, this,,port extending circumferentially around the valve approximately three-fourths o'l its periphery, as shown in Fig. 4. IL partition wall 17 is formed in the valve in such manner as to form a chamber or passage 18 separate from the interior of the valve; the passage 18 leading from the port /L to the upper end of UK) valve and opening to the interior of the valve through a port 1' formed in the wall of the valve adjacent to its upper end, in aliurment with the ports a-Z1, as shown in Fig. i

In the operation of this invention an explosive mixture is delivered (-ontinuoru-ly to the i'eed pipe 15 from any suitable source of supply; the engine then being started so as.

to reciprocate the pi."ons l l in their re SIHt'llflf cylinders A ll and rotate the valve 25 in the valve cnsiug 2.

For the purpose of xplanation, let it he assumed that the Elston l) is in its in ermost position, as shown in Fig. 2, and about to travel downward on the cl urging or intake stroke. The valve 3 will then he positioned, as shown in Figs. 3, 4, 5 and U, in which position the port '5 will be so disposed as to begin to open the port a as the piston E moves downward; the valve 3 rotating in the direction ofthe arrow in Fig. 3. At this point the piston F in the cylinder 13 will also he in its uppermost position and about to move downward on the power or driving stroke; the ports and (Z in the cylinder 15 being closed by the imperforate portions of the walls of the valve 3 during this down.- ward stroke of the piston F.

The piston E in moving downward will draw a quantity of the explosive mixture into the cylinder A through the ports rl2', passage 18,-and port- /2 from the feed pipe- 15. The moment the pistons E and-F reach their lowermost positions, the valve 3 will have moved sutliciently far to carry the port 2' beyond. the port (2, thereby closing the lat ter before the piston E starts on its upward or compression stroke; the port (1 in the' ylinder B being opened by the port f in the valve 3, as the piston F nears its lowermost position in moving downward, to permit of the escape of a portion of the burnt gases now above the piston F into the interior of the valve 3 and from thence to the atmosphere through openin s e and the pipe 16. The piston E is now disposed in its lowermost position and the space thereabov in the cylin-' der A is filled with the explosive mixture; the piston F being in its lowermost position and the burnt gases thereabove in the cylinder B about to be discharged into the interior of the valve The piston E now moves up ward to compress the explosive mixture thereabove, and the piston F moves upward to discharge the remainder 1 of the burnt gases in the cylinder B into the interior of the valve 3; the latter being so positioned as to dispose the port 51 therein to register with the port Z) in the cylinder B and to close the ports a and c in the cylinder A. When the piston E has reached its uppermost position,

on this stroke, the explosive mixture thereabove will have become greatly compressed 11.5, in the upper end of the cylinder 31.: This compressed mixture will then be exploded by means of a spark plug 11), or in any other suitable manner, thereby expanding the mixture and forcing the piston E downward with (-onsuleralile force, in the nianuer'common to four cycle engines, thereby rotating the shaft I through the piston'rod G and crank ll, and also driving the piston F down on its intake stroke, through ilsconnections with the shalt l: the port 5 in'the val\ e 3 opening to the port?) in the cylimler B'lhe moment the piston F reaches its upper-most position. The valve 3 will he so disposed as to close the ports a, o and d in cling to its uppermost posider rein readiness to draw into the cylinder; and the 11g on its compression stroke lo c zii'oprcss lhe c th reuhove prepare- ;ory to kmplfldllig some, which is accomplished moons a spark plug 19 iii the manner described in reference to the cylinder A thus completio one round of operw tions of the engine. '1 he pistons l:lF will now have each made four strokes or cycles; the shaft 1 will have made two revolutions; and the sleeve valve fl will have made one revolution, which operation is now repeated in the continuous opereiiou of the chgine.

lly delivering on oil or other suitable lubricant to the contacting faces of ihe val e 8 and its '2 a"; c. point adjacent to ihe upper end of the valve, Elie Wear of these surfaces will be greatly reduced. For this purpose on oil inlet pessag 20 is formed iu the engine casing, as shown in Fig. 2,

inclosin? valve casing 2 in the wiser 2 the valve cylinder 2 and the 3 may be cooled to reduce expansion 0 the h i passing therethrough. it is maid-fest ike; any number of of engine cj'linders A B, with a valve 3 .w-i

pair, may be mounted io operate on one dri e-shaft l as may he desired.

1 pisloii l rot: i

' up no cylinders adjacent to the upper ends of the pistons while the letter are moving downward on the driving; strokesat the moment the power of the explosion of the charge in the cylinders has been expended.

This arrangement facilitates the scavenging of the burnt charge.

By the arrangement and construction of" the sleeve valve 3 and its adjustable mounting in sud-thrust bearings, constituting the esseuti l p of this invention, a large pori area is i" as to ofier little resistance to the engine in drawing in the explosive charge and exhausting the burnt gases, and

so import-em feature of this invention lll-fiil inieriml combustion engine; the con'ihingitioii, with a cylinder, a piston Wurlill'lg therein, and iiilei and exhaust pipes; of av casing arranged adjacent and parallel with toe cylinder and having zipper and lows. ports which communi respeo tively, Wlili the upper eiid ofsoid cylinder and with ihe intermediate portion thereof at a poins just above the piston when in X lowermost position; a hollow, rotary 'slee valve disposed Within said c2: 1g for Co.- troiliiigg the opening and cloc, W of so ports, and in port communication ct its lower end with the exhaust pipe, said valve having a partition wall adapted to a passage separate from the interior of the YillVii and in communication at its lower end wire the inlet pipe, and also having; upper and lower ports adapted open and close the corresponding cylinder portsduriug the rotation of the rolre; and means for rot-otsoid lve iii an internal combustion engine, the coin nation, with o cylinder, 2i piston Worki115; therein, and inlet and exhaust pipes; of a valve casing; arranged adjacent to and p sllel with the cylinder and having" upper and lower herbs which communicate respecfsively; with the upper end of said cylinder, and with she intermediate portion thereof at e poiui jus shove the piston when in its lowermost position; a hollow, rotary sleeve valve disposed within said having within it a partition which di interior iongiiudioally t merits ironies-Mug; upper ll; die upper cylinder pods o of compartments ooiiimuniossing wish the i'nlei pipe, and the other comp-erimeut with the exhaust ice, the lower portion. of said valve being provided with a port which is ads pied to alternately open and-close she uoper cylinder "port during the rotation of the valve and which communicates Wiih the said other compartment; and means r0- toririgssid valve.

Iii ies 'simohy whereof l have hereunto set my hand in the presence of two subscribin? witiiesses.

- ESBEET P. LEHR.

Witnesses FREDERICK W. PALMER, riomsoii Bi BJRBAHK.

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